The Town is celebrating its first literary festival, and The No. 2 Feline Detective Agency has been hired to oversee security.
On the arrival of the three Brontë sisters and the famous aristocat, Sir Downton Tabby, Hettie Bagshot and her sidekick, Tilly, are plunged into crisis as a serial killer stalks the festival grounds. Will there be an author left standing? Will Meridian Hambone sell out of her 'littertray' t-shirts? And will there be enough crime teas to go round?
Through heatwave and violent storm, Hettie and Tilly face up to the horror and spite of the literary world in a real spine thriller!

It seems that these feline Brontës are nine and live on the Porkshire Moors:

The Brontës of Teethly had also accepted Tilly’s invitation, and all three 9 sisters – known for their bonnet novels set against the backdrop of the Porkshire Moors – were to appear.